Related Experiment Video
Updated: May 24, 2026

09:33
Phthalic Acid Ester-Binding DNA Aptamer Selection, Characterization, and Application to an Electrochemical Aptasensor
Published on: March 21, 2018
Aptamers for pharmaceuticals and their application in environmental analytics.
Beate Strehlitz1, Christine Reinemann, Soeren Linkorn
1UFZ-Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany.
Bioanalytical Reviews
|March 6, 2012
Summary
Aptamers, which are DNA or RNA molecules, offer high-affinity binding for detecting environmental pharmaceutical residues in water. Aptamer-based biosensors provide a convenient method for identifying these contaminants.
Area of Science:
- Biochemistry and Environmental Science
- Molecular Biology
- Analytical Chemistry
Background:
- Aptamers are single-stranded DNA or RNA oligonucleotides with high affinity and specificity for target molecules.
- Pharmaceutical residues are prevalent in environmental water sources, posing ecological and health risks.
- Traditional biosensor receptors like antibodies and enzymes are often unsuitable for detecting pharmaceuticals.
Purpose of the Study:
- To review aptamer and sensor developments for detecting pharmaceutical residues in environmental water.
- To highlight the advantages of aptamers as recognition elements in biosensors for environmental monitoring.
Main Methods:
- Literature review of aptamer selection and biosensor development for pharmaceutical detection.
- Focus on environmental applications and challenges.
- Analysis of aptamer's suitability compared to conventional receptors.
Main Results:
- Aptamers can be developed to specifically bind to a wide range of pharmaceutical compounds.
- Aptamer-based biosensors enable rapid and sensitive detection of pharmaceuticals in water samples.
- Aptamers overcome limitations of traditional receptors for pharmaceutical detection.
Conclusions:
- Aptamers are highly effective molecular recognition elements for developing sensitive biosensors.
- Aptamer technology shows significant promise for environmental monitoring of pharmaceutical contaminants.
- Further research in aptamer and sensor development is crucial for effective water quality management.
Related Concept Videos
Microbial Biosensors
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...

